Description
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Affected products
microsoft: .net; apple: macos; linux: linux kernel; microsoft: windows; microsoft: visual studio 2022; microsoft: visual studio 2026
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96957 Vendor Advisory
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 46 · as of 11 November 2026
- CWE
- CWE-347
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.